good quality with low price 30 years experience fast delievery best service high credit Standard :HD22.4 S3,VDE-0282 Part-4,CEI 20-19/4 / 20-35 (EN60332-1),IEC 60245-4,CE ,and so on . Uo/U :475/825 & 500/1000 V Structure of cable : Color of core :two core :blue ,brownthree core :green/yellow,blue ,brownfour core :yellow/green ,black ,brown ,bluefive core:yellow/green ,brown ,black ,grey ,blue ...